Portable construction hoist



March 11, 1952 A. D. ALLPHIN ET AL 2,588,458

PORTABLE CONSTRUCTION HOIST Filed Oct. 6, 1950 s Sheet-Sheet 1 4 ALI/IE0. ALQVPHIIV.

@ KAY .4. ALLPH/N,

A. D. ALLPHIN ET AL 2,588,458

March 11, 1952 PORTABLE CONSTRUCTION HOIST 3 Sheets-Sheet 2 Filed Oct.6, 1950 FIG. 2.

AL V/E 0. ALLPH/N, KAY A. A L1. P/mv,

March 11, 1952 A. D. ALLPHIN ETAL 2,588,458

' PORTABLE CONSTRUCTION HOIST Filed 001:. s, 1950 s-sneexs-sneet aINVENTORS. A4105 0. ALLPH/N, Kg? .4. AZLPH/M Patented Mar. 11, 1952UNITED STATES PATENT OFFICE PORTABLE CONSTRUCTION HOIST Alvie D. Allphinand Kay A. Allphin, Cody, Wyo. Application October 6, 1950, Serial No.188,807

2 Claims. (Cl. 214-100) This invention relates to hoisting mechanisms,

able construction hoist which is particularly,

adapted for adjustment to various heights,

whereby the upper end thereof can be extended through any window openingin a structure for support on the floor adjacent said window opening.

Another object of this invention is to provide a portable hoistincluding a bucket which is par-' ticularly adapted to be supported on atrack for movement therealong in a safe and simple manner.

A further object of this invention is to provide a portable hoistincluding a bucket which is def tachably secured to a mobile chassis,whereby the bucket can be easily removed for cleaning, dumping orstorage.

A still further object of this invention is to provide a portableconstruction hoist which is relatively simple in structure, easy toassemble and disassemble, and cheap to manufacture.

The above and still further objects and advantages of the invention willbecome apparent upon consideration of the following detailed descriptionof the invention, when taken in conjunction with the accompanyingdrawings, wherein:

Figure 1 is a side elevational view of the portable construction hoistof the present invention,

shown with its lower end supported on a ground surface contiguous to andspaced from a structure, and its upper end extending through a windowopening in the structure and supported on an adjacent floor surface;

Figure 2 is a front elevational view of the construction hoist of thepresent invention, taken from the right of Figure 1;

Figure 3 is an enlarged sectional view taken along the line 3-3 ofFigure l;

Figure 4 is an enlarged fragmentary sectional view taken along the line4-4 of Figure 1; Y

Figure 5 is an enlarged fragmentary side elevational view showing thebucket of the hoist in its uppermost position contiguous to the windowopening of'the building structure;

Figure 6 is a fragmentary elevational view take en along the line 6-6 ofFigure 5; and

- Figure 7 is a perspective view of the bucket forming a part-of theconstruction hoist of the present invention.

Referring now more particularly to the drawings, wherein like referencenumerals have been used throughout the several views to designate likeparts, there is shown the construction hoist of the presentinventionfgenerally designated by the reference numeral III, which issupported on a ground surface I I contiguous to a building structure I2having a window opening I3 spaced ab ve the ground surface I I and anadjacent floor surface I4 spaced below the window opening I3 and abovethe ground surface I I.

The hoist II] embodies a base I5 adapted to 'rest on the ground surfaceI I at a point spaced from the building structure I2. Arranged at anangle with respect to the base I5 is an upwardly extending track I6which has its lower end conne'cted to the base I5 and has its upper endbent arcuately inwardly, as indicated by the reference numeral IT, forextension through the window opening I3 to a point spaced inwardlythereof.

The track I6 includes a pair of spaced tubular members I8 and I9 whichare interconnected contiguous to the arcuately bent end I I by means ofthe crossbars 20, which extend between the tubular members I8 and I9 andare secured therebetween. As clearly shown in Figure l, the straightcourse of the track I6 intermediate the lower end thereof and thearcuately bent end II embodies individual, tubular sections 2| which aredisposed in end-to-end confronting relation with respect to each other,the confronting ends being detachably secured together by means of a lug22 carried by one of the confronting ends and embracingly received andsupported Within the confronting end of the adjacent one of the tubularsections 2I. Accordingly, the hoist lfl'is' adapted for adjustment tovarious heights, whereby the arcuately bent upper end thereof can beextended through any window opening in the building structure l2.

Dependingly carried by the arcuately bent end I'I 'of the track I 6 arethe supporting brackets 24 and 25 which are engageable with the adejacent floor surface I4 of the building structure I2 for supporting theinwardly bent end ll of the track within the window opening I3. Sinceeach of the supporting brackets 24 and 25 is of like structure, it willsuflice to describe only one in detail. The supporting bracket 24embodies a first angle bar 26 which has one end fixedly secured to theadjacent section of the track I6, the other end being provided with a'plurality of longitudinally spaced apertures 21. A second angle bar 28is disposed in end-to-end aligned relation with respect to the angle bar26 and is likewise provided with a plurality of longitudinally spacedapertures 29' which are selectively alignable with the apertures 21 ofthe angle bar 26. Extending through the alignable apertures 21 and 29 ofthe sections 26 and 28 are the bolts 30 and 3| for detachably securingthese sections in a select position of their adjustment with respect toeach other. Accordingly, the supporting bracket 24 can be adjusted forengagement with the floor surface M at different levels with respect tothe window opening l3.

Extending between the base I and the track I 6 is an adjustable brace 32which has one end pivotally connected to the base l5, as indicated bythe reference numeral 33, or the end of the base remote from thesupported end of the track l6. The other end of the adjustable brace 32is pivotally connected to the track, as indicated by the referencenumeral 34, at a point spaced downwardly from the upper end of the trackl6. The adjustable brace 32 embodies a pair of tubular sections 35 and36, the tubular section 35 having one end telescopically received andsupported within the adjacent end of the tubular section 36. Thetelescoped ends of the sections 35 and 36 are provided withlongitudinally spaced apertures, generally designated by the referencenumeral 31, the apertures of the sections being selectively alignablewith respect to each other in select positions of the adjustment of thesections. Extending transversely through the alignable apertures of thesections 35 and 36 are the bolts or pins 38, for detachably securing thesections in a select position of their adjustment with respect to eachother.

Extending between the base 5 and the track 6 is an auxiliary brace 39which has one end connected to the base, as indicated by the referencenumeral 40, at a point contiguous to the pivotally connected end 33 ofthe brace 32 and has the other end connected to the track |6 at a pointadjacent to and spaced forwardly from the lower end of the track, theconnection being designated by the reference numeral 4|. The auxiliarybrace 39 is adjustable in length and is of a similar structure to theadjustable brace 32, the brace 39 embodying the telescoped sections 42and 43 interconnected by the pins 44 which extend through selectivelyalignable apertures provided in the sections 42 and 43.

Positioned on the, track I6 is a mobile chassis 46 which is mounted onthe track for movement longitudinally thereof. The mobile chassis 46embodies spaced tubular side members 41 and 48, Figure 3. which areinterconnected by a cross brace 49. Dependingly carried contiguous toeach end of the side member 41 are the cars 50 and 5|. Similarly, ears52 and 53 are dependingly secured to the ends of the side member 48.Suitable mounting means, generally designated by the reference numeral54 are carried by each of the depending ears 50 to 53, inclusive, andengage the adjacent members 8 and I9, to thereby mount the chassis 46for movement along the track. Since each of the mounting means 54 is thesame, it will suflice to describe only one in detail. As clearly shownin Figure 3, the mounting means 54 embodies a pair of spaced rollers 55and 56 engaging opposed peripheral portions of the tubular flat memberI8 and rotatably journaled on the ear 50. The roller 56 is rotatablyjournaled on a stub shaft 51 and is provided with a concave'bearingsurface 58 intermediate its ends adapted to engage a substantialperipheral portion of the tubular rail member I8. The roller 55 islikewise journaled on a stub shaft 59, but only engages the rail member8 at a single point alon the periphery thereof.

Resting upon the chassis 46 is a bucket 60, Figure 7, which isdetachably secured to the chassis with the open end 6| thereof facingupwardly. The bucket 69 includes a pair of depending side flanges 62 and63, each flange being provided with an elongated slot 64 extendinglongitudinally thereof substantially midway between the ends thereof andspaced inwardly from the free lower side edge thereof. A por-- tion ofthe flange 62 intermediate the ends of the slot 64 is cut away, asindicated by the reference numeral 65, to thereby form the bayonet slot66. Projecting outwardly from the side members 41 and 48 of the chassis46 are the supporting lugs 61 and 68 which are engageable with thebayonet slots 66 of the side flanges 62 and 63, to thereby detachablysecure the bucket 66 on the mobile chassis 46.

Rotatably journaled on the track l6 at spaced intervals therealong are aplurality of longitudinally aligned guide pulleys, generally designatedby the reference numeral 10. As clearly shown in Figures 2 and 6, theguide pulleys 10 are journaled substantially midway between the ends ofthe brace bars 20 for rotary movement about the brace bars as pivotalaxes.

Disposed transversely of the upper end of the track I6 is a pulleysupport 1| which has its ends fixedly secured to the rails l8 and IQ ofthe track l6. Rotatably journaled intermediate the ends of the supportrod is the encased pulley 12 which is disposed in alignment with respectto the guide pulleys 10. A steel cable 13 is positioned intermediate thetubular members I8 and I9 of the track I6 and has an intermediateportion trained upwardly over the guide pulleys 10 and the encasedpulley 12, the cable having one end fixedly secured to the cross bar 49of the chassis 46 and having the other end extending beneath the trackl6 toward the base l5. Dependingly supported from the track I6contiguous to and at spaced intervals along the upper end thereof are aplurality of support bars 14 which carry a plurality of longitudinallyaligned guide pulleys 15 for the extension therethrough of the free endof the steel cable 13. As shown in Figures 2 and 6, the guide pulleys 15are journaled substantially midway between the ends of the support bars14 for rotary movement about the bars 14 as a pivotal axis.

Carried by the base I5 is an electrically operated hoist mechanism 16 towhich the free end of the cable is operatively connected, the hoistmechanism being adapted to effect the movement of the assembly of themobile chassis and the bucket along the track l6. The hoist mechanismincludes an electric motor 11 which is coupled to a reel 13 by means ofa belt 19. The hoist mechanism is provided with suitable braking andclutching means, not shown, whereby the intermittent actuation andbraking of the chassis 46 can be effected.

Fixedly secured to the upper end of each of the rail members [8 and I9at a point spaced inwardly from the pulley support 1| are the stopelements and 8| which preclude the withdrawal of the chassis from theupper end of the track I6.

From the foregoing, the operation of the portable construction hoist ofthe present invention is readily apparent. The hoist can be selectivelyadjusted to various heights, whereby the upper arcuately bent end H ofthe track I6 can be extended through any window opening in a buildingstructure. The bucket 60 can be disengaged from its supported positionon the mobile chassis 46 by merely withdrawing the lugs 61 and 68 fromtheir supported positions within the bayonet slots 66 provided in theside flanges 62 and 63 of the bucket 60.

Although only one embodiment of the portable construction hoist of thepresent invention has been described, it is readily apparent thatnumerous modifications can be made without departing from the spirit ofthe invention as set forth in the appended claims.

What we claim is:

1. A portable construction hoist for a building including a windowopening spaced above a ground surface and a floor surface within saidbuilding and adjacent said window opening, said hoist comprising a baseadapted to rest on said ground surface at a point spaced from saidbuilding, an upwardly extending track arranged at an angle with respectto said base and having its lower end hingedly connected contiguous toone end of said base, the portion of the track adjacent the upper endthereof being bent arcuately to thereby dispose the upper end at anangle with respect to the track for extension of said other end throughsaid window opening, a first adjustable brace means dependingly carriedby said track contiguous to said upper end and adapted to engage saidfloor surface for supporting said upper end of said track when extendedthrough said window opening, a second brace means having one endhingedly connected to said base contiguous to the other end thereof andhaving its other end hingedly connected to said track adjacent to andspaced from the lower end thereof, a third brace means having one endhingedly connected to said base adjacent said other end thereof andhaving its other end hingedly connected to the arcuate portion of saidtrack, a bucket mounted on said track for reciprocatory movement, andhoist means operatively connected to said bucket for efiecting themovement of said bucket along said track.

2. A portable construction hoist for a building including a windowopening spaced above a ground surface and a floor surface within saidbuilding and adjacent said window opening, said hoist comprising a baseadapted to rest on said ground surface at a point spaced from saidbuilding, an upwardly extending track arranged at an angle with respectto said base and having its lower end hingedly connected contiguous toone end of said base, the portion of the track adjacent the upper endthereof being bent arcuately to thereby dispose the upper end at anangle with respect to the track for extension of said other end throughsaid window opening, a first adjustable brace means dependingly carriedby said track contiguous to said upper end and adapted to engagesaidfloor surface for supporting said upper end of said track when extendedthrough said window opening, a second brace means having one endhingedly connected to said base contiguous to the other end thereof andhaving its other end hingedly connected to said track adjacent to andspaced from the lower end thereof, a third brace means having one endhingedly connected to said base adjacent said other end thereof andhaving its other end hingedly connected to the arcuate portion of saidtrack, a mobile chassis positioned on said track, mounting meansdependingly carried by said chassis and embracingly engageable with saidtrack for securing said chassis to said track, an upwardly openingbucket supported on said chassis and detachably secured thereto, aplurality of longitudinally aligned pulleys rotatably supported on saidtrack at spaced intervals therealong, a cable having one end fixedlysecured to said chassis and having an intermediate portion trainedupwardly over said pulleys, and hoist means carried by said base andoperatively connected to the other end of said cable for effecting themovement of the chassis along said track.

ALVIE D. ALLPHIN. KAY A. ALLPHIN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

